Linked Life Data

12097335

Source:http://linkedlifedata.com/resource/pubmed/id/12097335

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
37
pubmed:dateCreated
2002-9-9
pubmed:abstractText
Curli are surface organelles of Escherichia coli. These fibrous proteins, formed by polymerization of a 15-kDa subunit, are expressed by E. coli strains associated with severe infections in humans. A remarkable property of curli is their ability to interact with a wide range of human proteins, interactions that contribute to the enhanced virulence of curli-expressing E. coli. To define the protein-binding region(s) of curli, we investigated the binding properties of overlapping synthetic peptides covering the curli subunit. Two peptides, one covering a 24-amino acid residue sequence in the NH(2)-terminal half of the subunit (NNS24) and one corresponding to the 26 COOH-terminal residues (VDQ26), were found to bind a number of human proteins. Physiochemical analysis revealed that NNS24 adopts a thermally stable beta-structure, and in solution the peptide forms soluble multimers, predominantly octamers. Intact curli are known to activate the proinflammatory and procoagulant contact system, and when added to human plasma, the NNS24 and VDQ26 peptides induced the release of the potent vasoactive peptide bradykinin. The results map important curli functions to the regions corresponding to the NNS24 and VDQ26 sequences.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
13
pubmed:volume
277
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
34568-72
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Identification of two protein-binding and functional regions of curli, a surface organelle and virulence determinant of Escherichia coli.
pubmed:affiliation
Section for Molecular Pathogenesis, Department of Cell and Molecular Biology, Lund University, SE-221 84 Lund, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't